CN203551768U - Digital watt-hour meter calibration device for intelligent substation - Google Patents
Digital watt-hour meter calibration device for intelligent substation Download PDFInfo
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- CN203551768U CN203551768U CN201320745001.XU CN201320745001U CN203551768U CN 203551768 U CN203551768 U CN 203551768U CN 201320745001 U CN201320745001 U CN 201320745001U CN 203551768 U CN203551768 U CN 203551768U
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Abstract
The utility model provides a digital watt-hour meter calibration device for an intelligent substation, which comprises a main control unit, a high-speed data processing unit, a network management unit, an FPGA unit, a touch display screen, a key unit and a power supply management unit. The main control unit is in two-way signal connection and in electrical connection with the high-speed data processing unit and the touch display screen respectively; the main control unit is in signal connection and in electrical connection with the key unit; the high-speed data processing unit is in two-way signal connection and in electrical connection with the network management unit and the FPGA unit; and the power supply management unit is used for providing working power supply. According to the digital watt-hour meter calibration device for an intelligent substation, a multi-core framework is adopted, calibration is real-time and high-efficiency, the calibration is high in precision, the operation interface is friendly, interfaces are rich, access in calibration site is convenient, time and labor are saved, the problem that optical fiber digital signals can not be accessed in the condition of site actual load calibration is solved, the structure is simple, the cost is low, and the use is convenient.
Description
Technical field
The utility model relates to the intelligent substation metering detection technique field of electric power system, is specifically related to a kind of digitalized electrical energy meter calibration equipment that the three phase electronic multifunctional electric energy meter of the intelligent substation based on IEC6185 standard is examined and determine and tested.
Background technology
Intelligent substation is the important step that intelligent grid is built, transformer station's digitizing, intellectuality has become a kind of trend, digital transformer substation is different from traditional transformer station, its framework is in IEC61850 standard base, the three-decker that adopts process layer, wall and station level, all electrical measurements all change into after the digital signal that meets IEC61850 9-1,9-2 agreement at process layer, by fiber optic Ethernet, pass to process layer or bay device.In intelligent substation, need to use the more digitalized electrical energy meter for measuring, its digital electricity meter used all needs its error etc. to carry out verification in laboratory and while being arranged on the real load operation of intelligent substation.Traditional electric energy meter has relatively ripe calibration equipment and more complete vertification regulation and method; And digitalized electrical energy meter is compared with traditional ammeter, all there is larger variation in its measuring principle and method, it is no longer traditional dependence analog acquisition, but complete function of measuring based on the collection by digitized signal under IEC61850 standard architecture, and can realize communication by the modes such as network and miscellaneous equipment (as background computer system).At present, can be preferably digitalized electrical energy meter be particularly carried out at the scene to relatively ripe verification pick-up unit or the instrument of high precision detection check under real load condition in laboratory, still rare.
Utility model content
The purpose of this utility model is: provide a kind of simple in structure, cost is lower, rich interface, accuracy of detection is high and convenient and fast connection intelligent substation digitalized electrical energy meter calibration equipment while using.
The technical solution of the utility model is: intelligent substation digitalized electrical energy meter calibration equipment of the present utility model, and its design feature is: comprise main control unit, high-speed data processing unit, network management unit, FPGA unit, touch display screen, push-button unit and Power Management Unit;
Main control unit is provided with the first communication ends, second communication end, display end and push button signalling input end; High-speed data processing unit is provided with the first to the 5th communication ends; Network management unit is provided with data-signal communication ends and control signal communication ends; FPGA unit is provided with data communication end; Touch display screen is provided with display end; Push-button unit is provided with signal output part;
The first communication ends of main control unit is electrically connected to the first communication ends two-way signaling of high-speed data processing unit; The second communication end of main control unit is electrically connected to the second communication end two-way signaling of high-speed data processing unit; The display end of main control unit is electrically connected to the display end two-way signaling of touch display screen; The push button signalling input end of main control unit is electrically connected to the signal output part signal of push-button unit; The third communication end of high-speed data processing unit is electrically connected to the data-signal communication ends two-way signaling of network management unit; The 4th communication ends of high-speed data processing unit is electrically connected to the control signal communication ends two-way signaling of network management unit; The 5th communication ends of high-speed data processing unit is electrically connected to the data communication end two-way signaling of FPGA unit; Power Management Unit is used for providing working power.
Further scheme is: above-mentioned main control unit comprises CPU module, flash memory module, SDRAM module, clock module, Network Interface Module, communication interface modules, usb interface module, display module and dual port RAM module; CPU module is provided with communication ends and button signal input end; Display module and dual port RAM module are without being respectively equipped with the first communication ends and second communication end;
The flash memory module of main control unit, SDRAM module, clock module, Network Interface Module, communication interface modules and usb interface module are electrically connected to CPU module two-way signaling respectively; The first communication ends of display module, the first communication ends of dual port RAM module are electrically connected to CPU module two-way signaling respectively;
The communication ends of CPU module is the first communication ends of main control unit; The second communication end of dual port RAM module is the second communication end of main control unit; The button signal input end of CPU module is the push button signalling input end of main control unit; The second communication end of display module is the display end of main control unit.
Further scheme is: above-mentioned high-speed data processing unit comprises that model is the 32 bit DSP chips of ADSP-BF518, and dominant frequency is 400MHz.
Further scheme is: above-mentioned network management unit is provided with ST optical fiber interface, SC optical fiber interface and RJ45 interface; Wherein, ST optical fiber interface and SC optical fiber interface are respectively provided with respectively 2; RJ45 interface is provided with 3.
Further scheme also has: above-mentioned FPGA unit is provided with high-frequency impulse output interface, ammeter pulse input interface and FT3 data-interface.
The utlity model has positive effect: (1) intelligent substation digitalized electrical energy meter of the present utility model calibration equipment, adopt the multicore architecture of the processing data information of main control unit, high-speed data processing unit and FPGA unit, during for real-time detection check, guarantee the detection real-time high-efficiency of device to digitalized electrical energy meter, and accuracy of detection is high.(2) intelligent substation digitalized electrical energy meter calibration equipment of the present utility model, main control unit, by network interface is set, is communicated by letter with backstage host computer during use conveniently; USB interface, RS232 communication interface are set, connect peripheral hardware convenient.(3) intelligent substation digitalized electrical energy meter calibration equipment of the present utility model, network management unit 3 is provided with ST optical fiber interface 31, SC optical fiber interface 32 and RJ45 interface 33, facilitate access on-the-spot in verification and different fiber interface and network interface, and carry out again the conversion of interface after needn't arriving verification scene, time saving and energy saving; Meanwhile, solved in the situation of on-the-spot real load calibrating the problem of incoming fiber optic digital signal simultaneously: traditional field-checking can and connect tester and electric energy meter, and voltage, the current signal of sampling circuit detect simultaneously.In digital transformer substation, be generally that point-to-point 61850 messages of merge cells are to digitalized electrical energy meter, merge cells seldom has reserved test designated lane for on-site proving, the utility model passes through network management unit, the data-signal that merge cells is sent is by many mouthfuls of synchronous forwardings, realize calibration equipment and digitalized electrical energy meter and synchronously obtain data, thus can be at the local dynamic precision test of realizing under real load of tested ammeter.(4) intelligent substation digitalized electrical energy meter calibration equipment of the present utility model, by the setting of touch display screen and push-button unit, makes operation and control interface friendly, easy to use.
(5) intelligent substation digitalized electrical energy meter calibration equipment of the present utility model, structure is relatively simple, and cost is lower.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Reference numeral in above-mentioned accompanying drawing is as follows:
Main control unit 1, CPU module 11, flash memory module 12, SDRAM module 13, clock module 14, Network Interface Module 15, communication interface modules 16, usb interface module 17, display module 18, dual port RAM module 19,
High-speed data processing unit 2,
FPGA unit 4, high-frequency impulse output interface 41, ammeter pulse input interface 42, FT3 data-interface 43,
Touch display screen 5,
Push-button unit 6,
Power Management Unit 7.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
(embodiment 1)
See Fig. 1, the intelligent substation digitalized electrical energy meter calibration equipment of the present embodiment, is mainly comprised of main control unit 1, high-speed data processing unit 2, network management unit 3, FPGA unit 4, touch display screen 5, push-button unit 6 and Power Management Unit 7.
Main control unit 1 is provided with the first communication ends, second communication end, display end and push button signalling input end; High-speed data processing unit 2 is provided with the first to the 5th communication ends; Network management unit 3 is provided with data-signal communication ends and control signal communication ends; FPGA unit 4 is provided with data communication end; Touch display screen 5 is provided with display end; Push-button unit 6 is provided with signal output part.
The first communication ends of main control unit 1 is electrically connected to the first communication ends two-way signaling of high-speed data processing unit 2; The second communication end of main control unit 1 is electrically connected to the second communication end two-way signaling of high-speed data processing unit 2; The display end of main control unit 1 is electrically connected to the display end two-way signaling of touch display screen 5; The push button signalling input end of main control unit 1 is electrically connected to the signal output part signal of push-button unit 6; The third communication end of high-speed data processing unit 2 is electrically connected to the data-signal communication ends two-way signaling of network management unit 3; The 4th communication ends of high-speed data processing unit 2 is electrically connected to the control signal communication ends two-way signaling of network management unit 3; The 5th communication ends of high-speed data processing unit 2 is electrically connected to the data communication end two-way signaling of FPGA unit 4; Power Management Unit 7 provides working power for each unit.
Main control unit 1 is mainly comprised of CPU module 11, flash memory module 12, SDRAM module 13, clock module 14, Network Interface Module 15, communication interface modules 16, usb interface module 17, display module 18 and dual port RAM module 19.CPU module 11 is provided with communication ends and button signal input end; Display module 18 and dual port RAM module 19 are without being respectively equipped with the first communication ends and second communication end.
The flash memory module 12 of main control unit 1, SDRAM module 13, clock module 14, Network Interface Module 15, communication interface modules 16 and usb interface module 17 are electrically connected to CPU module 11 two-way signalings respectively; The first communication ends of display module 18, the first communication ends of dual port RAM module 19 are electrically connected to CPU module 11 two-way signalings respectively.
The communication ends of CPU module 11 is the first communication ends of main control unit 1; The second communication end of dual port RAM module 19 is the second communication end of main control unit 1; The button signal input end of CPU module 11 is the push button signalling input end of main control unit 1; The second communication end of display module 18 is the display end of main control unit 1.
The core processing device of the CPU module 11 of main control unit 1 is the ARM9 microprocessor of dominant frequency 200MHz, and its serial port is as the first communication ends of main control unit 1.Flash memory module 12 preferably adopts NORFlash flash chip, and it is for storing the information datas such as testing scheme, test result form of basic parameter, configuration.SDRAM module 13 is called for data storage and acceptance.Clock module 14 provides clock signal for CPU module 11.Network Interface Module 15 preferably adopts RJ45 network interface, and it can be used for realizing and the communication of host computer and the digitalized electrical energy meter that is connected the uploading data function of support IEC61850 standard and calls survey together to carry out model measurement and data.Communication interface modules 16 is provided with RS232 service port, is used for equipment to safeguard.Usb interface module 17 is realized the access of the equipment such as importing and exporting of data and keyboard, mouse for connecing USB flash disk.Display module 18 is for driving touch display screen and realizing information interaction.One end of dual port RAM module 19 is electrically connected to CPU module 11 two-way signalings, the other end of dual port RAM module 19 is the second communication end of main control unit 1, and dual port RAM module 19 is for realizing the CPU module 11 of main control unit 1 and the communication of the big data quantity between high-speed data processing unit 2.
High-speed data processing unit 2 is for carrying out data processing.In the present embodiment, high-speed data processing unit 2 preferably adopts the 32 bit DSP chips that model is ADSP-BF518, and dominant frequency is 400MHz.
FPGA unit 4, for realizing the Code And Decode of the output of high-frequency impulse and the input of tested digitalized electrical energy meter pulse and signal capture and signal.FPGA unit 4 is provided with high-frequency impulse output interface 41, ammeter pulse input interface 42 and FT3 data-interface 43.Wherein, the high-frequency impulse output interface 41 meritorious pulse output in output 1 road and the idle pulses in 1 road; Meritorious pulse and idle pulse that when ammeter pulse input interface 42 is used, digitalized electrical energy meter is surveyed in reception; FT3 data-interface 43 is sent into signal or send the FPGA processing of decoding and encode.
So-called FPGA, refers to field programmable gate array.So-called FT3, refers to a kind of transmission frame format of link layer, is the frame format that IEC60044-8 electronic current mutual inductor standard regulation is used.
Push-button unit 6 is comprised of 8 function buttons.The effect of push-button unit 6 is that the supplementary means as touch display screen 5 realizes parameter configuration and control.
Power Management Unit 7 is used to each unit of this device, each module that corresponding working power is provided.
(application examples)
The intelligent substation digitalized electrical energy meter calibration equipment of previous embodiment 1, for carrying out the calibrating verification of laboratory and the lower precision of on-the-spot real load and other function to digital quantity input electric energy meter.
When laboratory verification, main control unit 1 is connected with host computer by touch display screen 5 or the Network Interface Module 15 by main control unit 1, according to different demands, configure corresponding qualification program, as curent change, power factor change, frequency change, change in voltage, sampled point changes, packet loss, network interruption etc. customizes electric energy Accuracy amount, the scheme preparing is stored in main control unit 1, the scheme of calling in during test starts automatically according to the test number of turns, test volumes etc. calculate the high-frequency impulse constant of corresponding power also voltage, electric current, frequency, the first communication ends (serial communication interface of CPU module 11) that the information exchanges such as angle are crossed main control unit 1 is dealt into high-speed data processing unit 2(DSP), high-speed data processing unit 2 is according to the parameter of main control unit 1 configuration, organize IEC61850-9-1/9-2 or FT3 message, according to the sample frequency arranging, as 4k, 12.8k, by the various optical fiber interfaces (ST optical fiber interface 31, SC optical fiber interface 32, RJ45 interface 33 etc.) of network management unit 3, transmit messages literary composition to tested digitalized electrical energy meter, FPGA unit 4 constantly gathers the pulse signal of the tested ammeter of access, high-frequency impulse number under the high frequency frequency of sending according to high-speed data processing unit 2 and test number of turns computational rules pulse number also returns to high-speed data processing unit 2 by its data communication end (data bus), high-speed data processing unit 2 calculates the error under corresponding test condition and is uploaded to main control unit 1 according to formula, main control unit 1 is controlled touch display screen 5 and is carried out corresponding information demonstration, and can be uploaded to ipc monitor platform.Main control unit 1, after having tested according to the testing scheme of setting, generates testing journal sheet automatically.
When intelligent substation carries out testing under on-the-spot real load condition, main control unit 1 is the communications parameter with Intelligent substation merging unit by the fast data processing unit 2 of touch display screen 5 configuration, as MAC Address, communication protocol, APPID, voltage and current that passage is corresponding etc., the ammeter pulse input interface of FPGA unit 4 (meritorious and idle pulse input port) is connected with the pulse delivery outlet of digitalized electrical energy meter to be checked; If the merge cells of intelligent substation has special verification delivery outlet, directly ST optical fiber interface 31 or the SC optical fiber interface 32 of access device carry out verification, if the merge cells of intelligent substation does not have special delivery outlet, many mouthfuls of synchronous forwarding capabilitys that utilize network management unit 3 to have, the message that the merge cells of intelligent substation is sent is synchronously dealt into tested electric energy meter and high-speed data processing unit 2 simultaneously, also needn't lay in addition cable and just can conveniently realize on-the-spot In-situ test.High-speed data processing unit 2 and tested ammeter obtain the digital signal of the merge cells of intelligent substation simultaneously, simultaneously under identical real-time dynamic load, the pulse of the tested electric energy meter output of FPGA unit 4 dynamic acquisition, at the rising edge of first pulse, catch and to 2 interruptions of high-speed data processing unit, another rising edge when predetermined pulse number arrives triggers and interrupts to high-speed data processing unit 2, the electric weight adding up in the poor calculating during this period of time of high-speed data processing unit 2 according to these two time points is also converted the site error that calculates this test point by meter constant.
In order to test digitalized electrical energy meter, upload the model accordance of the station level agreement of using IEC61850-8-1 simultaneously, the RJ45 interface that connects tested electric energy meter by the Network Interface Module 15 of main control unit, by the IEC61850 model of MMS reading power meters, thus the function of detection digitalized electrical energy meter.
In sum, intelligent substation digitalized electrical energy meter calibration equipment of the present utility model, adopt the multicore architecture of the processing data information of main control unit, high-speed data processing unit and FPGA unit, during for real-time detection check, guarantee the detection real-time high-efficiency of device to digitalized electrical energy meter, and accuracy of detection is high; Main control unit, by network interface is set, is communicated by letter with backstage host computer during use conveniently; USB interface, RS232 communication interface are set, connect peripheral hardware convenient; Network management unit 3 is provided with ST optical fiber interface 31, SC optical fiber interface 32 and RJ45 interface 33, facilitates access on-the-spot in verification and different fiber interface and network interface, and carries out the conversion of interface after needn't arriving verification scene again, time saving and energy saving; Meanwhile, solved in the situation of on-the-spot real load calibrating the problem of incoming fiber optic digital signal simultaneously, can be at the local dynamic precision test of realizing under real load of tested ammeter; By the setting of touch display screen and push-button unit, make operation and control interface friendly, easy to use; Structure is relatively simple, and cost is lower.
Above embodiment is the explanation to embodiment of the present utility model; but not to restriction of the present utility model; person skilled in the relevant technique is not in the situation that departing from spirit and scope of the present utility model; can also make various conversion and variation and obtain the corresponding technical scheme being equal to, therefore all technical schemes that are equal to all should be included into scope of patent protection of the present utility model.
Claims (5)
1. an intelligent substation digitalized electrical energy meter calibration equipment, is characterized in that: comprise main control unit (1), high-speed data processing unit (2), network management unit (3), FPGA unit (4), touch display screen (5), push-button unit (6) and Power Management Unit (7);
Main control unit (1) is provided with the first communication ends, second communication end, display end and push button signalling input end; High-speed data processing unit (2) is provided with the first to the 5th communication ends; Network management unit (3) is provided with data-signal communication ends and control signal communication ends; FPGA unit (4) is provided with data communication end; Touch display screen (5) is provided with display end; Push-button unit (6) is provided with signal output part;
The first communication ends of main control unit (1) is electrically connected to the first communication ends two-way signaling of high-speed data processing unit (2); The second communication end of main control unit (1) is electrically connected to the second communication end two-way signaling of high-speed data processing unit (2); The display end of main control unit (1) is electrically connected to the display end two-way signaling of touch display screen (5); The push button signalling input end of main control unit (1) is electrically connected to the signal output part signal of push-button unit (6); The third communication end of high-speed data processing unit (2) is electrically connected to the data-signal communication ends two-way signaling of network management unit (3); The 4th communication ends of high-speed data processing unit (2) is electrically connected to the control signal communication ends two-way signaling of network management unit (3); The 5th communication ends of high-speed data processing unit (2) is electrically connected to the data communication end two-way signaling of FPGA unit (4); Power Management Unit (7) is for providing working power.
2. intelligent substation digitalized electrical energy meter calibration equipment according to claim 1, is characterized in that: described main control unit (1) comprises CPU module (11), flash memory module (12), SDRAM module (13), clock module (14), Network Interface Module (15), communication interface modules (16), usb interface module (17), display module (18) and dual port RAM module (19); CPU module (11) is provided with communication ends and button signal input end; Display module (18) and dual port RAM module (19) are without being respectively equipped with the first communication ends and second communication end;
The flash memory module (12) of main control unit (1), SDRAM module (13), clock module (14), Network Interface Module (15), communication interface modules (16) and usb interface module (17) are electrically connected to CPU module (11) two-way signaling respectively; The first communication ends of the first communication ends of display module (18), dual port RAM module (19) is electrically connected to CPU module (11) two-way signaling respectively;
The communication ends of CPU module (11) is the first communication ends of main control unit (1); The second communication end of dual port RAM module (19) is the second communication end of main control unit (1); The button signal input end of CPU module (11) is the push button signalling input end of main control unit (1); The second communication end of display module (18) is the display end of main control unit (1).
3. intelligent substation digitalized electrical energy meter calibration equipment according to claim 2, is characterized in that: described high-speed data processing unit (2) comprises that model is the 32 bit DSP chips of ADSP-BF518, and dominant frequency is 400MHz.
4. intelligent substation digitalized electrical energy meter calibration equipment according to claim 3, is characterized in that: described network management unit (3) is provided with ST optical fiber interface (31), SC optical fiber interface (32) and RJ45 interface (33); Wherein, ST optical fiber interface (31) and SC optical fiber interface (32) are respectively provided with respectively 2; RJ45 interface (33) is provided with 3.
5. intelligent substation digitalized electrical energy meter calibration equipment according to claim 4, is characterized in that: described FPGA unit (4) is provided with high-frequency impulse output interface (41), ammeter pulse input interface (42) and FT3 data-interface (43).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320745001.XU CN203551768U (en) | 2013-11-22 | 2013-11-22 | Digital watt-hour meter calibration device for intelligent substation |
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| CN201320745001.XU CN203551768U (en) | 2013-11-22 | 2013-11-22 | Digital watt-hour meter calibration device for intelligent substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605105A (en) * | 2013-11-22 | 2014-02-26 | 江苏省电力公司常州供电公司 | Calibration device for digital electric energy meter of intelligent substation |
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2013
- 2013-11-22 CN CN201320745001.XU patent/CN203551768U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605105A (en) * | 2013-11-22 | 2014-02-26 | 江苏省电力公司常州供电公司 | Calibration device for digital electric energy meter of intelligent substation |
| CN103605105B (en) * | 2013-11-22 | 2016-02-03 | 江苏省电力公司常州供电公司 | Calibration device for digital electric energy meter of intelligent substation |
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